摘要
以CaO-SiO2(22·4%)-Al2O3(11·6%)-CaF2(10%)精炼渣作为基础渣系,添加BaO或Li2O,固定(CaO+BaO或Li2O)/SiO2=2·5,研究渣系熔点和粘度等熔体特性的变化。结果显示加入BaO、Li2O可以明显降低渣系的熔点和粘度,有效改善渣钢反应的动力学条件。当(BaO,Li2O)=15wt%时,熔渣的熔点分别为1267℃和1185℃,远低于作对比的基础渣的熔点1326℃,当温度为1475℃时,熔渣粘度分别为0·98Pa·s和0·51Pa·s,远小于基础渣的粘度1·79Pa·s,使渣系具有良好的流动性,将显著提高炼钢精炼渣的精炼性能。
A refining slag of CaO （hal）-SiO2 （22.4%）-Al2O3 （11.6%）-CaF2 （10%） was selected as the basic slags. The effect of additives （BaO or Li2O） on melting point and viscosity of CaO- based slags was studied when the ratio of （CaO ＋ BaO or Li2O ）/SiO2 was fixed at 2.5. The results showed that the melting point and viscosity of slags decreased by adding BaO or Li2O into CaO-based slags, the dynamics condition of metal slags reaction was improved effectively. When （Li2O or BaO ） = 15%, the melting point （1185℃, 1267℃） of slags were much lower than that （1326℃） of slag without additives, the viscosity （0.51Pa· s, 0.98 Pa· s） of slag at 1475℃ was much lower than that （1.79 Pa·s） of slag without additives. The fluidity of slags was good enough to satisfy the requirement of the melting capacity of fluxes.
出处
《上海金属》
CAS
2005年第5期20-22,30,共4页
Shanghai Metals
基金
国家自然科学基金项目(50474037)
江苏省高校自然科学研究项目(04BJK430022)
